Razor-sharpening machine.



L. J. ODELL RAZOR SHARPENING MACHINE. APPLIOATION FILED 11110.27, 1910,

Patented J an. 28, 1913.

2 SHEETS-SHEET 1.

.ZeviJOda L. J. ODELL.

RAZOR SHARPENING MACHINE. APPLIUATION FILED DEC. 27, 1910.

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Patented Jan. 28, 1913.

LEVI J. ODELL, 01 GLENIDORA, CALIFORNIA.

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Specification of Letters IZatent.

Application filed December 27, 18110 Hartcnt ed Plan. 211?, ifitft.Serial No. 539,462.

To aZZ ell/tom it may concern Be it known that I, LEVI J. ODELL, acitizen of the. United States, residing at Glen-- dora, in thecounty ofLos Angeles and State of Ca ifornia, have invented new and usefulImprovements in Razor- Sharpening Ma chines, of which the following is aspecification.

This invention relates to improvements in machines for shopping razorblades, and has reference more particularly to that class ofdoladescommonly employed with safety razors and an important object of theinvention is the provision of a machine that will quickly and accuratelyresharpen such blades in a uniform manner, the proper provision beingmade forthe pressure of the blades against the stropping members duringthe operation.

It is a further object of the invention to rovide a mechanism in which anumber of blades may be applied to the stropping mechanism at a time,the mechanism being such that any one or more of the blades may beremoved and replaced in the machine or others substituted thereforwithout interfering with the operation of the machine or the sharpeningof other blades.

In the drawing forming a part of this specification, Figure l is a sideelevation of the improved stropping machine, looking at the same fromthe side upon which the blades are inserted. Fig. 2 is a transversesectional view taken upon the lines 2-2 of Fig. 1. Fig. 3 is a detailedview partially in section and partially in elevatiousliowing themounting of the bar or member which removably supports the razor bladesand their holders. Fig. 4 is a top plan view of a pprtion. ofthe machineone end thereof beingbroken away. Fig. 5 is an enlarged detall view ofone otthe blade holders, a portion thereof being shown in section and aportion in elevation. Fig. 6 ,is a transverse sectional view taken uponthe line 6-6 of Fig. 5.

In the drawin the preferred embodiment of the invention. as beenillustrated and the said invention w ill now he more particularlydescribed,referencebeing had'to said drawing-in-whieh 10 indicates aframe, 11 and 12 upper and lower stropping rolls or cylinders and 13.,ablade carrying bar which is journaled shits ends in the frame 10,suitable journal bearings let being provided in the-end uprights of theframes. The journals 15 of said bar 13 are preferably formed uponupwardly projecting extensions 16 formed at each end of" the said bar sothat the bar will always hang below the journals and thus remain inproper position for bold ing the razor blades and their holders.

The stropping rolls l1 and 12 are of any" desired construction beingusually made hollow and of a suitablclength to extend opposite a numberof razor blade holders carried by the bar 13. Their outer surfaces areformed with any suitable sharpening or grinding surface for placing anedge upon the razor blades that are pressed against them. The saidrollers 11 and 12 are placed apart and are usually mounted one above theother as clearly shown in Fig. 2. The shafts 17 and 18 of the saidiollers pro ect beyond their hearings in the frame '10 at one cud or theother as found most desirable, and driving pulleys as 19 and 20 areapplied thereto. The pulley .19 of the roller 11 is usually at one endof the machine while the pulley 9.0 of the roller 12 is at. the otherend. These pulleys 20 are usually grooved and thus adapted to be drivenby any ordinary or desired belting not shown. The rolls 11 and 12 aredriven in the direction indicated by the arrows in Fig. 2 so as to turnaway from the blade or blades inserted bet-ween them. The said bar 13 isprovided with a number of brackets 21 which are preferably U shaped incross section, and are riveted or otherwise secured to the said bar 13at suitable intervals thereon. The upright portions of the brackets 21form side standards which are provided with holder receiving recesses 22which open outivardly from the rollers 11 and 12, as shown in Fig. 2.

To one side of each bracket 21is a stand ard or binding post 23 having alateral hole or tlDOlblll'QQri pas ug through the same for receiving asecuring pin carried bythe blade holder as will be hereinafterdescribed. Set or clamping screws 25 are threaded into he upper ends ofthe said binding posts 23 and are capable of being screwed down to theholes i tfor clamping the portions of the holders that; are insertedtherein. The said clamping screws may be provided with any desired headsas for instance flattened thumb engaging heads as 26 or pivoted shorthandles 27 ,by which the screws ,may be turned. Where the binding postsare arranged in close proximity to ach other as shown at the center ofthe machine, the pivoted handles 27 are preferred, as they do notinteriere with each other.

The blade holders are formed with shank portions 28 having a bore 29extending inwardly from the end thereof. A spindle 30 extends into saidbore at one end while its outer end is flattened and has secured to itby means of a screw rivet or other suitable securing means the springjaws 31 and 32 of the blade gripping means.

The outer ends of the jaws 31 ancl 32 are usually broadened as at 33 tofit upon the razor blade and firmly grip the same as clearly shown inthe drawing; The gripping plates 31 and are brought together by means ofa thumb screw 34 and a nut 85 applied thereon as clearly indicated inFig. 5. The nut 85 is prevented from turning by engaging an upturned lug36 struck from the plate 32.

The spindle 30 is loosely mounted in the bore 29 so that it has a swivelaction therein, and the blade carried thereby may accommod'ate itself toany unevenness upon of sufiicient size to permit a proper amount ofswivel action in the spindle 30 with respect to the shank 28, as will beclearly understood by reference to Fig. 6. The said shank 28 of theblade holder is carried by a sleeve 39 which is clamped to the shank.

by a set screw as 40 and is provided with lateral projecting trunnions41, there being one trunnion on each side of the said sleeve. Thetrunnions 41 project in such a manner that they may be readily slippedinto the recesses 22 when the blades are to be in sertedbetween thestropping rolls; The said trunnions 41 slide into and out of posi tionon the brackets 21', upon an elongated bearing'edge 42 upon eachstandard of each of said brackets.

In order to hold the shank 28 in place under a spring action, a clip 43is applied to its end and projects laterally therefrom a sulilcientdistance to carry a spring securing pin 44 which extends approximatelyara-llel with the said shank '28 as clearl p sheen in the drawing. Thepin 33 is made of suiiicient length to engage and project through theapertures 24 in the binding posts when the trunnions 41 of the holdersare placed in position in the recesses 22,

and by turning the clamp screws 25 the holders are firmly held in place.

In order to bring the blades successively in gagement with the rollers11 and 12 the ournal bar l3is adapted to be rocked upon its journals 15by'means of a'leve projection 45 formed thereon. 'The lever 45 isconnected by means of a suitablelink 46 with a bell crank 47 which ispivoted to the frame 10 at 48. The lower end of the said link 46isusually connected with the said bell crank by means of an intermediatelink 49'having pivoted engagement with both the said lever and th /saidlink and thus permitting of a free and easy articulation of the parts.-0ne end of the bell crank lever 47 projects upwardly and is providedwith an ai'iti-friction roller 50 which fits into a cam path 51 formedupon a cam 52 which is secured to a shaft 53. The shaft 53 extendsparallel to the strepping rollers and is usually journaled in the frame10 below the bar 13. The roll 53 is provided with a driving pulley 54 bywhich it may be driven at a proper rate of speed for causing the rockingof the plate 13 up and down in, forcing theblades of the blade holdersfirst into. engagement with one stropping roll and then with the other.7

The use of the machine will be readily I understood from the abovedescription. The stroppin'g rollers are kept in continu- 0115 motion andafter placing the blades betweenthe plates 81 and 32 and clamping themin position, the holder is put in place by sliding trunnions '41 intothe recess 22 of one of the brackets 21, the pin 44 being at the sametime inserted in the aperture 24 of the adjacent binding post. The pin44 is then secured iii-place, by turning the clamping screw 25. This canbe readily done while the bar 13 is being rockedior forcing the bladeagainst one of the rollers. By loosening the clamp screw 25 the holdercan be easily taken from position. Any

number of holders may be in place atthe ping rollers arranged oppositeto each other,

arocking bar extending parallel with said. rollers, a plurality of bladeholders adapted to carry blades to be stropped, and arranged v toproject laterally from said bar to points between said rollers, andmeans mounted upon said bar into which the blade holders may he slippedwithout stopping the rocking of the said bar, and yielding means forholding the blade holders v on said bar for presenting the bladesbet-ween the said stropping rollers.

2. A stroppingmechanism comprising oppositely arranged parallelstroppingro'l'lers,

an elongated rocker bar mounted parallel thereto and opposite the spacebetween the rollers, blade holders having lateral supportingprojections, means carried by said bar for receiving the said lateralprojections of the blade holders, the said blade holders being capableof withdrawal from their holding means while others are held in place,spring means for holding the said blade holders on said bar and meansfor rocking the bar to carry the blades held by the holders against thestropping rollers.

3. A stropping mechanism comprising an elongated stropping roller, arock bar mounted parallel therewith and having recesses for receivingblade holders. blade holders having projections thereon adapted to beslipped into said recesses when the bar is rocking or stationary, thesaid blade holders carrying the blades to be sharpened against theroller, and spring means connecting the blade holders with said bar andcausing them to press the blades against the roller and means forrocking said bar.

4. A razor stropping mechanism, comprising parallel stropping rolls, aholder carrying bar extending parallel with said rolls and jo-urnaled soas to move with respect thereto, a plurality of blade receiving seatsmounted upon the said bar, blade holders having supporting projectionsadapted to be inserted in .raid seats. and preventing the holders fromturning axially, the said blade holders being thus adapted to be thrownbetween the stropping rolls, ineans for rocking the said bar forpressing the blades against the stropping rolls and spring rods forlocking the holders on said bar and causing them to press the bladesagainst the stropping rolls. and means for clamping the said spring rodsin position.

5. A razor strapping mechanism comprising stropping rolls a journal bararranged opposite thereto. U shaped brackets secured to the said bar andhaving standards with recesses opening outwardly. blade carrying holdershaving trunnions capable of titting in said recesses, and means ofsecuring razor blades upon the said holders. the rocking of the journalbar operating to press the said blades against the stropping rollssuccessively.

6. A stropping mechanism comprisingparallel stropping rolls. a rockingbar extending parallel thereto. brackets secured to the said bar forreceiving blade holders. the said brackets having ont-wa rdlV openingrccesses, blade holders adapted, to be inserted in said brackets andhaving means for 'engaging said recesses, and means for holding theblade holders' upon said bar with a spring tension whereby the rock-ingof-thc bar will cause the blades carried by the holders to bepressedagainst the stropping rolls.

7. A razor stropping mechanism comprisin power driven stropping rolls, aspace bemg left between the said rolls, razor blade holders adapted toextend into said space between the rolls each having a spindle, shanksfor holding the said spindles with a swivel action. retaining means formovably holding the spindles in conjunction therewith, a rocking meansfor supporting the said razor blade holders and causing them to applythe blades to the stropping rolls underconsiderable pressure.

8. A stropping mechanism comprising a plurality of stropping rolls.razor blade holders adapted to press the blades against each of saidrolls. each of said. holders comprising a hollow shank. a swivel bladegripping means mounted therein, trunnion projections secured to theshanks, spring securing means also secured to said shanks. a rocking barhaving brackets for engaging the trnnnions ot' the blade holders.binding posts for engaging the said spring securing means. and means formovablv clamping the said spring securing means for holding the bladeholders in position on the rocker bar.

9. A stropping mechanism comprising oppositely mounted stromuing rolls.a rocking bar journaled parallel therewith and opposite the spacebetivcen said rolls. removable blade holders mounted on said bar, meansfor holding the blade holders upon said bar under spring tension, abellcrank lever connected with said bar for rocking it cam for operatingthe said bell crank lever, and means for rotating the cam.

10. A stropping device comprising oppositel mounted stropping rolls, arocking bar journaled parallel therewith and opposite the space betweensaid rolls, a torsional spring holding means mounted upon said bar andadapted to carry blades to be stropped, and means for rocking the barfor pressing said blades against the stropping rolls.

11. A blade sharpening machine including a pair of sharpening rolls. arocking blade carrier, a blade carrying plate applied to the bladecarrier and formed with lugs. a.

blade holder pivoted upon the l ugs, and a spring engaging the bladeholder tor holding the blade in a yielding engagement with the rolls.

In witness that I claim the foregoing -l have hereunto subscribed myname this 17th day of December 1910.

[1. 1T. \Vitnesses:

EDMUND A. Srnausn, Emma R. POLLARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of .Pateuts, Washington, I). C.

